Valve.



Patented Mar. 14, 1916'.

N M A P M A LWD E MMH a C N m o A 1 x V 0 1L H 3 X 2 g 7 8 1 9 5 2 l l FNK GREELMAN, OF NEW YORK, COMPANY, OF NEW YORK,

a. a, N. Y., COBEOTION OF DELAWARE.

EQQ

ASSIGNQR TO GAS AND OIL COMBUSTION VALVE.

Specification of Letters Patent.

Patented Mar. 14, 1916.

Application filed April 1, 1918. Serial No. 758,196.

To all whom it may concern:

Be it known that I, FRANK CREELMAN, a citizen of the United States, residing at New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Valves, fully described and represented in the following specification and the accompanying drawings, forming. a part of the same.

This invention relates to valves; and it has to do with a valve suitable especially for use as a mixing or proportioning valve and comprising in a typical embodiment of the invention a valve body or casing having fluid admission and discharge ports arranged in pairs for the passage of diiferent fluids and controlled by valve members which are simultaneously operable to open and close. said pairs of ports, one of said valve members being designed particularly to prevent leakage at the pair of ports controlled thereby, while another of said valve members is arranged for independent portadjusting movement to vary to any desired extent the effective area of the ports con trolled thereby, whereby the relative proportions of the different fluids passing through the several sets or pairs of ports may be adjusted at will without interfering with the simultaneous operation of the valve members in opening and closing said ports.

The invention has been made especially with the idea of providing a valve suitable for supplying an explosive mixture of a fuel gas and air or other combustion supporting gas, and whereby the volume of the mixture supplied may be readily varied without changing the relative proportions of the constituent gases in the mixture, and which shall also be adjustable to control the relative proportions of the gases passing through the valve for varying the character of the mixture delivered, or the relative proportions of its constituent gases, or it may be for maintaining the character or proportions of the mixture constant under variations in the relative pressures under which the gases reach the valve.

A principal object of the present invention is to effect the described desired results by means of a novel valve mechanism, simple in structure but convenient, accurate and dependable in operation.

A prominent characteristic of the invention-is the provision of a mixing valve in which the desired flexibility of mixture control is fully secured, while leakage of one of the fluids to be mixed, a fuel gas for example, is particularly guarded against and prevented.

A rotary valve embodying the principles of the present invention is illustrated in the accompanying drawings, in which;

Figure 1 is a longitudinal section of the valve, parts being shown in elevation; Fig. 2 is a section through a valve coupling memberon line. 22 of Fig. 1; Figs. 3 and 4 are cross sections on lines 3 -3 and 4-4, respectively, of Fig. l, with the valve plugs n a difierent position; Fig. 5 is a view similar to Fig.1, but showing a modified or alternative construction.

Referring to the drawings, and first to Figs. 1 to 4, the valve shown has been made especially for use in mixing and proportioning fuel gas and'air and will be considered as a valve for such purpose in the following description. The valve comprises a casing or housing 10 provided with gas inlet and outlet ports 11 and 12, respectively, and air inlet and outlet ports 13 and 14, respectively. The gas intake port opens from an internally threaded flanged recess 15 which provides means for ready attachment of a suitable connection to any convenient source of gas supply, which may be A similar flanged recessv under pressure. 16 on the opposite side of the easing into whlch the gas outlet port opens may be threaded plug 17, provided for a purpose to be hereinafter explained. Another internally threaded flanged recess 18 provides 'for the attachment of means for connecting closed at its outer end by a removable.

air outlet or discharge port opens and into i which a passage 20 also opens afi'ording communication between the gas and air outlet ports, provides for the attachment of means for conducting mixed gas and air to a place of use. The valve casing is provided with a longitudinal bore, conical in the vicinity of the gas ports to provide a gas tight seat for a tapered or conical valve plug or block 25, and cylindrical in the vicinity of the air ports to accommodate a cylindrical valve plug or block 26 having a close sliding fit therewith. Between its conical and cylindrical portions, the bore is for convenience in making somewhat enlarged. One of the valve plugs. the conical plug as shown, has its inner end, or a projection therefrom. provided with a diametral slot or recess which receives with a close sliding fit a projection or tongue 27 extending from the cylindrical plug. Such coupling means prevents relative rotation of the valve plugs. while permitting relative endwise or longitudinal movement of the plugs within limits. The two valve plugs may therefore be said to constitute a compound valve plug or block having adjustably coupled parts. Extending through the conical plug, is a port or channel 30 which is arranged to register simultaneously with and connect the inlet and outlet gas ports of the casing when the valve plug is turned into proper position. Similarly, a port or channel 31 extends through the cylindrical plug and is arranged to register simultaneously with and connect the air ports of the casing. In order that the gas and air ports shall be opened simultaneously by the turning of the compound valve plug, and that continued turning of the valve plug shall result in a uniform proportionate increase in the flow of gas and air through the respective ports and channels, the ports are. in the construction shown in the drawing. made rectangular in cross-section and set with the inlet ports and the outlet ports in longitudinal alinement, and the plug channels or passages 30 and 31 are of the same shape and dimensions in crosssection as the ports with which they coact and are arranged in longitudinal alinement and parallel with each other. Obviously, however, the portsand channels might be otherwise arranged or of other suitable shape. The dimensions of the ports and channels longitudinally of the valve, and consequently their capacities, are different, the air ports and channel being longer. \Vhere the valve is to be used for mixing a fuel gas and air, as in the present instance, this should ordinarily be the case; that is,

the air ports should have the greater maxi-- mum capacity. The conical valve plug 25 which has no endwise movement but only a turning movement. is constantly pressed against its seat by a spring 32 which surrounds the valve stem 33 and is held compressed between the end of the valve casing and a threaded thrust collar 34 screwed on. to the valve stem This insures a tight jOlIlt and prevents leakage of gas. A valve operatinghandle 35 serves for turning the compound valve' plug to open and close the ports. The cylindrical valve plug 26, besides being rotatable, may be moved longitudinally to vary the effective area of the air ports; and to this end there is provided a screw threaded rod 36 having a swivel connection to the cylindrical plug and working in the threaded hub of a cap 37 forming the head of the valve casing. By turning this rod, as by means of an adjusting handle 38 the cylindrical plug or portion of the compound valve plug may be adjusted longitudinally as desired. A lock nut 39 serves to lock the rod 36 to hold the valve plug against longitudinal movement when the proper adjustment has been attained. Slight leakage of air around the cylindrical plug does no special harm, but leakage of gas is to be avoided. This is why a coned plug and valve seat with a fixed effective port area for given angular positions of the valve plug are employed for controlling the gas; while the effective area of the air ports for given angular positions of the valve plug may be varied between zero and a maxnnum to give the proper proportioning of the mixture. In other words. the arrangement is such that the coned plug, and hence passage 30. is maintained in fixed longitudinal relation to ports '11 and 12: while the longitudinal relation of passage 31 to ports 13 and H is capable of being changed to vary proportionately for all positions of the valve the effective capacity of the ports 13 and 14. Since the gas port area is fixed, the air ports and channel should be so designed that the maximum effective air port area obtainable shall be amply suflicient to supply the amount of air required for the leanest mixture which the valve is likely to be called upon to provide. In the position of the air plug shown in Fig. 1, the valve is set to give the lea'nest mixture of which it is capable at given air and gas pressures.

In using the valve, the air and gas inlet or admission ports being connected to suit-- able sources of supply of air and gas under suitable pressure and the plug or stopper 17 being in place and the desired connection having been made from the recess or chamber 19, when it is desired to open the valve. the compound valve plug is turned'by means of the operating handle 35 to bring the channels or passages 30 and 31 in communication with their respective ports. A flow of gas and air then follows in proportions I determined by the relative capacities of the gas and air ports according to the adjustment of the cylindrical plug 26, the gas flowing through the passage 20 to join the air in the recess or chamber 19, from which the mixed gas and air are then discharged.

The gas and air ports,.as is apparent from v,Figs. 3 and/1, open. simultaneously and are always opened to the same angular extent. Figs. 3 and 4 show the valve part way open. Further turning of the valve plug will give an increased volume of flow without changing the relative proportions of the gas and air or other fluids in the mixture delivered. To change the proportions of the two fluids in the mixture, the lock nut 39 is loosenecl and by turning the screw rod; 36 the cylindrical plug 26 is moved longitudinally within the casing either toward or away from the conical plug to widen or narrow longitudinally the air ports 13 and 14 in the construction shown, thereby increasing or reducing the elective port area for any given angular position of the valve plug and correspondingly increasing or decreasing the proportionate amount of air passing through the valve and into the mixture. Either one of the ports 13 or i l mightohviously he made to serve alone as the controlling or measuring port by making it smaller than the other one. In Fig. l the cylindrical air plug 26 is shown, its position 07 longitudinal adjustment for supplying the greatest proportionate amount of air in the mixture of which the valve is capable, and the adjusting movement of this plug from this position would he movement to the right or away from the conical plug for reducing the proportionate fiow of air. adjustment ofthe eylinilrieal plug does not interfere in any Way with either subsequent or simultaneous turning the so ountl plug: or adjustment for volume; v on the .ot hand, for any given of the valve for proportions volume mixture delivered may he i creased ereaseel simply by turning means of operating out vary air oviciss for any desired e sisal valve 1 is clesirerl dissimilar valve, the steeper lu oveo an passage ole ping or stopper otherwise. eourse, he cl nir always r part conduits fromwaru int rmingleil or desired.)

e and howeven eor tion of the valve It will he noteel that the enolvvise 13 and 14: is formed by a slot or recess into which extends with a close sliding lit a orejeetion ortongue which is adjustable; v gituilinallv to vary the longitudinal dimension of the passage 31 and thereby vary proportionately for all open positions of the valve plugthe effective area of the ports 13 and 14; relatively to that or the ports 13. l2. For better guiding the tongue n) Wl v extends the full Width of part of the valve pl extenols from a eyiintlrieal hloelzc or L litterl to slide Within the eylinrlrie easing beyond eeliustine" screw 36 has a connection with this hlool: or head that by turning; the screw the tongue u 1 moved to increase or decrease the size or eepaeity or the 31 thereby el progoortionate the two passing through the as desired. it is the ends the channel or "passage at the surface of the which sooner with the l3 (l to co.

ernou the nel is t i fective area of said ports.

proportionately for all open positions of said valve forming means the relative ef- 3. A'proportioning valve comprising'valve seat forming means having a plurai ports therein for the separate passage of difierent fluids, valve forming means seated against said seat forming means, operating means for moving said valve forming means to simultaneously and proportionately open said ports,- and adjusting means'jfor causing 'a relative movement between portions of said valve forming means in a direction transverse to the opening movement thereof to vary proportionately for all 0 en po-' sitions of said valve forming means t e relative eifective area of said ports. v 4. A proportioning valve comprising valve seat forming means having a plurality of ports therein for the separate passage of difierent fluids, a compound valve block having adjustably coupled parts seated against said seat forming means, diiferent parts of the valve block controlling difierent ports of the valve seat forming means, operating means for moving said valve block to simultaneously and proportionately'open said ports, and adjusting. means for causing a relative movement between the parts of said valve block in a direction transverse to-the opening movement of said valve block to vary the relative effective area of said. ports. 7 a,

5. A proportioning valve comp'risingvalve seat forming means having a plurality of ports therein for the separate passage of diflerent fluids, a' tapered valve block seated against said seat forming means and movable in one. direction to control one of said ports, a valve rblock seated against said seat forming means to control another of said ports and movable in two directions,-operating means for moving said valve blocks together to simultaneously and proportionately open said two ports, and adjusting means for moving the second said valve block in a direction transverse to the opening ty of to vary the relative effective area of the ports controlled thereby.

7. A proportioning valve comprising a valve body provided with a plurality of ports for the separate passage of different fluids therethrough, and a plurality of valve members for controlling said ports, one of said valve members being held against movement transversely of the direction of its opening and closing movements, and anotherof said valve members being adjustable transversely of the direction of its opening and closing movements to vary proportionately for all open positions of said valve member the effective area of a port controlled thereby.

I, 8. A proportionin valve comprising avalve body provide with a plurality of ports for the separate passage of difi'erent fluids therethrough, a plurality of valve members for controlling said ports, one of said valve members being held against movement transversely of the direction of its opening and closing movements, and another of said valve members being adjustable transversely of the direction of its openingand closing movements to vary proportionately for all open positions of said valve member the efi'ective area of a port controlled thereby, and means for causing the bpening and closing movements of said valve members to be proportional.

9.,A proportioning valve comprising a valve body provided with a plurality of ports for the separate passage of different fluids therethrough, a plurality of valve membersfor controlling said ports, one of said valve members beingheld against movement' transversely of the direction of-its opening and closing movements, and another of said valve members being adjusable transversely of the direction of its opening and closing movements to vary proportionately for all open positions of said valve member the effective area of a port controlled thereby, and means for preventing relative movement of. said valve meme bers in the direction of their opening and closing movements.

10. A' proportioning valve comprisin'g'a valve body provided with ports for the sep-- arate passage of difierent fluids therethrough, valve members controlling said ports, meansconnecting said valve members in such'manner as to compel simultaneous 1'20 operation thereof in opening and closing said ports, while permitting adjustment of. one valve member relatively to another for varying proportionately for all open positions of the valve members the effective area of a port controlled thereby, and means for operating said valve members.

' 11. A proportioning valve comprising a valve body provided with ports for the sep (arate passage of different fluids there 139 i within said casing and relative rotation cylindrical plug to be moved longitudinally,

manner through, valve members controlling said ports, operating means for moving said valve members together relatively to their respective ports to simultaneously and proportionately open said ports, and adjusting means for moving one of said valve members relatively to another to vary the efiective area of a port controlled thereby.

12. A proportioning valve comprising a ported conical valve seat and a ported cylindrical valve seat, a coned valve plug seated to rotate, against the conical valve seat, a cylindrical valve plug seated to rotate against the cylindrical valve seat and adjustable longitudinally, and operating means for rotating said plugs together relatively to their respective seats to simultaneously and proportionately open ports in the respective valve seats.

13. A proportioning valve comprising a valve casing formed to provide a conical valve seat and a cylindrical valve seat in axial alinement, said valve seats having ports therein, a coned valve plug seated within the conical seat, a cylindrical valve plug seated within the cylindrical valve seat and adjustable longitudinally, and operating means for rotating said plugs together relatively to their respective seats to simultaneously and proportionately open said ports.

14. A proportioning valve comprising a valve casing formed to provide a conical valve seat and a cylindrical valve seat in axial alinement, said valve seats having ports therein, a coned valve plug seated within the conical valve seat, a cylindrical valve plug seated within the cylindrical valve seat and adjustable longitudinally,

coupling means connecting the adjacent ends of said plugs formed to prevent relative rotation' of the plugs and to permit longitudinal movement of the cylindrical plug rel- "titively to the conical plug, means for rotating said plugs, and adjusting means for controlling the longitudinal position of the cylindrical plug.

1. A propcrtioning valve comprising a valve casing provided with ports arranged in pairs, a coned valve plug seated within said casing and provided with a transverse channel arranged to register with and connect a pair of ports when the plug is re tated, a cylindrical valve plug also seated provided with a transverse channel arranged to register with and connect another pair of ports, said plugs in axial. alinement, coupling means connecting said plugs formed to prevent thereof but to permit the means for rotatm ing means for cc posi ion of the c it A. proper:

plug for rotating valve casing provided with ports arranged in pairs, a coned valve plug seated within said casing and provided with a channel arranged to register with and connect a pair of ports when the plug is rotated, a cylindrical valve plug also seated within said casing and ad ustable longitudinally and provided with a channel arranged to register with and connect another pair of ports, a passage connecting a port of one pair with a port of another pair,.and operating means for rotating said plugs together to simultaneously and proportionately open said pairs of ports.

17. A proportioning valve comprising a valve, body provided with ports arranged in pairs, rotatable valve plugs each having a transverse channel arranged upon suitable rotation of the plug to register with and connect a pair of said ports, the channels of different plugs 'coacting with difi'erent pairs of ports, means for preventing relative rotation of said plugs, adjusting means-for causing a relative endwise movement between said plugs, and means for rotating said plugs.

18. A proportioning valve comprising a valve casing provided with ports arranged in pairs, alined rotatable valve plugs each having a transverse channel arranged upon suitable rotation of the plug to register with and connect a pair of said ports, the channels of different plugs coacting with difierent pairs of ports, coupling means connecting said plugs and formed to prevent relative rotation thereof but to permit relative longitudinal movement thereof, means for adjusting the relative longitudinal positions Mid of said plugs, and means for rotating said plugs.

roportioning valve comprising a valve casing provided with ports arranged in pairs, a rotatable coned valve plug seated within said casing and provided with a transverse channel arranged upon rotation of theplug to place a pair of ports conmoving the same longitudinally, and opercone-d 'ating means connect valve so. A valve seat lit) against said seat forming means and comprising relatively adjustable parts, operating means for moving said valve to' open and close said ports, and adjusting means for causing a relative movement between said relatively adjustable arts of the valve to vary proportionately or all open positions of the valve the relative efi'ective area of said ports. 7 I.

21. A proportioning valve comprising valve seat forming means having a plurality of ports therein for the separate paslsage of diflerent fluids, a tapered valve block seated against said seat forming means and movable in one direction to control one of said ports, a valve block seated against said seat forming means to control another of said ports, operating means for moving said valve blocks together to simultaneously and proportionately open said ports; and adjusting means for varying proportionately for all open positions of the valve blocks the efi'ective area of the ort controlled by the second said valve b ock open positions of the valve plugs the efi'eetive area of a port controlled by the cylindrical plug relatively to thatof a port controlled by the coned plug.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

FRANK CREELMAN. Witnesses:

' EUGENE T. HARTIGAN,

A. L. KENT. 

